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Poster: Chris Freedom Date: Apr 21, 2007 9:57am
Forum: GratefulDead Subject: Stronger than Dirt (Non-Dead)

I found this in the news today:

Human Brain Has Origin in Lowly Worm

Robert Roy Britt
LiveScience Managing Editor 59 minutes ago

The origin of the human brain has been traced back to primitive central nervous systems in worms and bugs, researchers now say.

Humans and other vertebrates evolved from an ancient common ancestor that also gave rise to insects and worms, scientists have long known. But they're of course quite different today.

Vertebrates have a spinal cord running along their backs, but insects and annelid worms such as earthworms, which have simple organs that barely resemble a brain, have clusters of nerves organized in a chain along their bellies. So biologists have long assumed these systems—key to ultimately putting a brain to use—arose independently, only after the split.

In the new study, researchers at the European Molecular Biology Laboratory [EMBL] in Heidelberg examined they embryos of a marine annelid worm called Platynereis dumerilii, which has a nervous system unchanged for eons. They documented the molecular fingerprints of the developing nerve cells.

"Our findings were overwhelming," says study team member Alexandru Denes. "The molecular anatomy of the developing CNS [central nervous system ] turned out to be virtually the same in vertebrates and Platynereis. Corresponding regions give rise to neuron types with similar molecular fingerprints and these neurons also go on to form the same neural structures in annelid worm and vertebrates."

"Such a complex arrangement could not have been invented twice throughout evolution , it must be the same system," said Gáspár Jékely, another team member. "It looks like Platynereis and vertebrates have inherited the organization of their CNS from their remote common ancestors."

The results, published this month in the journal Cell, leave a nagging question: How did the central nervous systems get flipped from belly to backside or vice-versa?

"How the inversion occurred and how other invertebrates have modified the ancestral CNS throughout evolution are the next exciting questions for evolutionary biologists," said study leader Detlev Arendt.

Reminds me of Genesis 2:7

And the LORD God formed man of the dust of the ground, and breathed his nostrils the breath of life, and man became a living being

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Poster: Chris Freedom Date: Apr 21, 2007 1:18pm
Forum: GratefulDead Subject: Re: Stronger than Dirt (Non-Dead)

Nobody has touched this one. I love the self regulating nature of this forum. I had a feeling this might be one to many posts in this direction.

Anyway heres a joke for those who went through the effort to check this thread out;

A Russian Cosmonaut was asked how the Russians were going to counter the United States great superiority in technology in space. The cosmonaut was shown the latest American invention. Our brightest scientists after millions of dollars invested and many hours of labor had manufactured a Pen that can write in zero gravity.

The Russian said, "We , just use a pencil"

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Poster: midnight sun Date: Apr 21, 2007 4:56pm
Forum: GratefulDead Subject: Re: Stronger than Vacuums (Dead)

Jer's gorgeous guitar sound was made possible due to a demand for the manufacture of electronic vacuum tubes used in Soviet hospital equipment

we plug you into Cat-Scan machine and dial up MRI for EEgxstra comprression and SUStain....ya, rrrock an rrroll